Black screen on onePlus nord CE

[vishalnaikawadi]

The black screen is appearing whenever the scanner is opened, This is happening only for OnePlus Nord CE 5G Device (might be other devices too). I checked it for OnePlus 6, 6t, 9R, and 10R but it is working fine for these devices too. Even on the demo app, I'm facing the same issue.

Library version:

implementation 'com.github.yuriy-budiyev:code-scanner:2.3.2'

Implementation:

decodeCallback = DecodeCallback {

                runOnUiThread {
                    if (Utills.isInternetConnected(context)) {
                        if (it.text.toUpperCase(Locale.ENGLISH).endsWith(Constants.PDF_FORMAT)) {
                            openPdf(it.text)
                        } else loadWebView(it.text)
                    } else {
                        showNoInternetDialog(getString(R.string.no_internet_message))
                    }

                }
            }

errorCallback = ErrorCallback { // or ErrorCallback.SUPPRESS
                runOnUiThread {
                    showLongMessage("${getString(R.string.error)} : ${it.message}")
                }
            }

<com.budiyev.android.codescanner.CodeScannerView
            android:id="@+id/scanner_view"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            app:autoFocusButtonColor="@color/color_orange_background"
            app:autoFocusButtonVisible="true"
            app:flashButtonColor="@color/color_orange_background"
            app:flashButtonVisible="true"
            app:frameAspectRatioHeight="1"
            app:frameAspectRatioWidth="1"
            app:frameColor="@color/color_orange_background"
            app:frameCornersRadius="@dimen/margin_32_dp"
            app:frameCornersSize="@dimen/dimen_eighty"
            app:frameSize="0.75"
            app:frameThickness="@dimen/eight_dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/toolbar"
            app:maskColor="#77000000" />

Device Details: Name: OnePlus Nord CE 5G Android Version: 12

[vishalnaikawadi]

So after verifying the issue on the OP NORD 5G, I noticed a few things.

when the size is returned from the Utils.findSuitableImageSize() set in parameters.setPreviewSize(imageWidth, imageHeight) causing the issue and throwing the exception (which is ignored) inside a startPreviewInternal() method. it is throwing below-mentioned exception:

java.lang.RuntimeException: setParameters failed

parameters.getSupportedPreviewSizes() returns below supported sizes.

h: 2080 w: 4624
h: 2080 w: 4608
h: 1890 w: 4160
h: 1872 w: 4160
h: 2250 w: 4000
h: 1818 w: 4000
h: 1800 w: 4000
h: 2160 w: 3840
h: 1644 w: 3840
h: 2592 w: 3456
h: 2464 w: 3280
h: 2448 w: 3264
h: 1836 w: 3264
h: 1472 w: 3264
h: 2400 w: 3200
h: 1440 w: 3168
h: 2160 w: 2880
h: 1944 w: 2592
h: 1512 w: 2688
h: 1080 w: 2400
h: 1748 w: 2328
h: 1168 w: 2592
h: 1080 w: 2376
h: 1728 w: 2304
h: 1080 w: 2160
h: 1080 w: 1920
h: 864 w: 1920
h: 822 w: 1920
h: 1200 w: 1600
h: 800 w: 1600
h: 720 w: 1600
h: 720 w: 1584
h: 1080 w: 1440
h: 960 w: 1280
h: 768 w: 1280
h: 768 w: 1024
h: 720 w: 1280
h: 540 w: 1188
h: 540 w: 1200
h: 360 w: 840
h: 400 w: 800
h: 360 w: 792
h: 540 w: 720
h: 480 w: 720
h: 480 w: 640
h: 360 w: 640
h: 288 w: 352
h: 240 w: 320
h: 144 w: 176
h: 2250 w: 4000

and findSuitableImageSize() is returning h: 2250 w: 4000, but for this specific size I'm not able to see the preview, and an exception is being thrown. but if I use this size (h: 2080 w: 4624), it is working fine for me. I don't know the exact reason but I've commented few lines of code and it is working fine on all of the devices I checked.

change

 @NonNull
    public static Point findSuitableImageSize(@NonNull final Parameters parameters,
                                              final int frameWidth, final int frameHeight) {
        final List<Camera.Size> sizes = parameters.getSupportedPreviewSizes();
        for(int i = 0; i < sizes.size(); i++) {
            Log.d("====size: ", "h: "+ sizes.get(i).height + " w: "+sizes.get(i).width);
        }
        if (sizes != null && !sizes.isEmpty()) {
            Collections.sort(sizes, new CameraSizeComparator());
//            final float frameRatio = (float) frameWidth / (float) frameHeight;
            for (float distortion = MIN_DISTORTION; distortion <= MAX_DISTORTION;
                 distortion += DISTORTION_STEP) {
                for (final Camera.Size size : sizes) {
                    final int width = size.width;
                    final int height = size.height;
//                    if (width * height >= MIN_PREVIEW_PIXELS &&
//                            Math.abs(frameRatio - (float) width / (float) height) <= distortion) {
                        Log.d("====returned size", "h: "+height+" w: "+width);
                        return new Point(width, height);
//                    }
                }
            }
        }
        final Camera.Size defaultSize = parameters.getPreviewSize();
        if (defaultSize == null) {
            throw new CodeScannerException("Unable to configure camera preview size");
        }
        Log.d("====default size", "h: "+defaultSize.height+" w: "+defaultSize.width);
        return new Point(defaultSize.width, defaultSize.height);
    }

Note: Not all OP NORD 5G devices are facing this issue. some OP 5 devices are also facing the same problem.

[shaileshe2logy]

I am also facing the same issue on my project on the OnePlus Nord CE device. I have used the library using Gradle (v2.3.2).

@vishalnaikawadi Is there any way to fix it without modifying the library code?

[Will5]

A co-worker also showed me this issue on his OnePlus Nord CE device